A host and a storage system each keep a shared identifier indicating a state of a system. The storage system acquires, at update of data, a data pair including data for a change through processing of the host and data before the update. The storage system relates the data pair to a shared identifier. When the host indicates an identifier, the storage system restores data using the data pair.

 
Web www.patentalert.com

< System and method of configuring a database system with replicated data and automatic failover and recovery

> Methods and systems for defining documents with selectable and/or sequenceable parts

> Method and system for filtering website content

~ 00525